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Inani kanye nokusetshenziswa kwe-mineral bauxite, i-aluminium ore.

Thenga i-bauxite yemvelo esitolo sethu

Ama-bauxite angamaminerali ancibilikisiwe anokuqukethwe okuphezulu kwe-aluminium uma kuqhathaniswa. Iwumthombo oyinhloko we-aluminium ne-gallium emhlabeni. Itshe lakhiwe ngokuyinhloko ngamaminerali e-aluminium, i-gibbsite, i-boehmite ne-diaspore, exutshwe nama-iron oxides amabili, i-goethite ne-hematite, i-aluminium mineral kaolinite, kanye nenani elincane le-anatase ne-ilmenite.

ukuqeqeshwa

Kuphakanyiswe izikimu eziningi zokuhlukanisa i-bauxite.

U-Vadász (1951) wehlukanisa i-latetitic (silicate) ores ku-karst bauxite (carbonate):

• I-carbonate bauxite ngokuyinhloko itholakala eYurophu, eGuyana, naseJamaica ngaphezu kwamatshe e-carbonate (i-limestone ne-dolomite), lapho akhiwa khona isimo sezulu esiseduze kanye nokunqwabelana kwezinsalela zobumba—ubumba oluhlakazekile—okwakugxilwa njengoba amatshe e-limestone ayencibilika kancane kancane phakathi namakhemikhali. isimo sezulu.
• Amatshe asemuva atholakala ikakhulukazi emazweni ashisayo. Akhiwa ngenxa ye-peritization yamadwala e-silicate ahlukahlukene njenge-granite, i-gneiss, i-basalt, i-syenite ne-schist. Uma kuqhathaniswa nama-laterites anothe ngensimbi, ukwakheka kwala matshe kuncike nakakhulu esimweni sezulu esishubile endaweni ene-drainage enhle kakhulu. Lokhu kuvumela i-kaolinite ukuthi incibilike futhi i-gibbsite imvula. Izindawo ezine-aluminium ephezulu kakhulu zivame ukuba ngaphansi kongqimba olungaphezulu lwensimbi. I-Aluminium hydroxide kumadiphozithi e-latetitic icishe ibe yi-gibbsite kuphela.

Endabeni yase-Jamaica, ukuhlaziya kwakamuva kwenhlabathi kubonise amazinga aphakeme e-cadmium, okusikisela ukuthi amadwala avela emithonjeni yakamuva ye-Miocene ash evela eziqephuni ze-volcanism eqinile eMelika Ephakathi.

i-bauxite evela e-australia

Manufacturing

I-Australia ingumkhiqizi omkhulu kunayo yonke, ilandelwa yiChina. Ngo-2017, i-China yayingumkhiqizi omkhulu we-aluminium, ebalwa cishe ingxenye yomkhiqizo womhlaba wonke, ilandelwa yiRussia, Canada neNdiya.

Nakuba isidingo se-aluminium sikhula ngokushesha, izinqolobane ezaziwayo ze-rock ore zanele ukuhlangabezana nesidingo somhlaba se-aluminium emakhulwini amaningi eminyaka. Ukwenyuka kokuvuselelwa kabusha kwe-aluminium, okunenzuzo yokwehlisa izindleko zamandla okukhiqizwa kwe-aluminium, kuzokwandisa kakhulu amasheya omhlaba.

Ukusetshenziswa kanye nokubaluleka kwe-bauxite kanye nezakhiwo zokuphulukisa

Ingxenye elandelayo ingeyesayensi mbumbulu futhi isekelwe ezinkolelweni zamasiko.

Ukusetshenziswa kanye nokubaluleka kwe-bauxite

Itshe lingasetshenziswa ekuzindleni futhi lingasiza ezimweni ezingase zikuhluphe.

Kungakuvumela futhi ukuthi uqaphele izinhloso zabanye. Kuyaziwa ukusiza ukwandisa imizwa yenjabulo kanye nokwenza ngcono inhlalakahle.

Ayenzi ngokushesha, kodwa uma igcinwe eduze, amandla ayo asebenza njengesikhuthazi ngokuhamba kwesikhathi.

Ngokukusiza ukuthi ukhulule izinkinga zemizwa ezikuvimbela ukuthi uzuze lokho okufunayo, kungakusiza ukuthi ukhulule imizwa ekwenza uthukuthele noma ucasuke izimo zempilo.

i-bauxite ngaphansi kwe-microscope

Imibuzo Evame Ukubuzwa

Iyini i-bauxite?

Itshe lisetshenziselwa ukwenza i-alumina, bese isetshenziselwa ukwenza i-aluminium. Imfucuza ingakhiqizwa ezigabeni ezimbalwa zenqubo yokukhiqiza, okuhlanganisa ukumbiwa kwensimbi nokucutshungulwa.

Ikhiqizwa kanjani i-bauxite?

Itshe eliyigugu lakhiwa isimo sezulu ngokucophelela samadwala amaningi ahlukene. Amaminerali obumba ngokuvamile ayizigaba eziphakathi, kodwa amanye amadwala abonakala ephathwa ngamadiphozi amakhemikhali kunemikhiqizo elula yokuguqula. Ingashintsha ibe i-laterite noma ubumba kokubili ngokuphambene nangokuqondile.

Ibukeka kanjani i-bauxite?

Ivamise ukuba yimpahla ethambile enobulukhuni obungu-1 kuya ku-3 esikalini se-Mohs. Imhlophe ukuya kokumpunga kuya kokubomvu ngombala onsundu, inokwakheka kwe-pisolite, umbala womhlaba, kanye namandla adonsela phansi athile aphansi angu-2.0 kuya ku-2.5.

Uyini umbala we-bauxite?

Itshe linombala obomvu onsundu, omhlophe, onsundu ngokukhanyayo kanye nophuzi onsundu. I-luster ibuthuntu ibe yinhlabathi futhi ingase ibe nokubukeka kobumba noma umhlaba.

Iliphi izwe eline-bauxite eningi?

Ngo-2020, i-Australia yakhiqiza inani elikhulu kunawo wonke emhlabeni. Izwe likhiqize amathani angama-metric ayizigidi eziyi-110 kulo nyaka. Ngemva kwe-Australia kwaba neGuinea, eyayimba amathani ayizigidi ezingu-82 zamatshe.

Ngidayisa i-bauxite yemvelo esitolo sethu

Senza izindandatho zomshado ze-bauxite, imigexo, amacici, amasongo, imihlobiso elengayo… Sicela usithinte ukuze uthole isaphulelo.